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Old 21st of March 2009 (Sat)   #1
sandro9mm
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Default Does cmos sensor get old?

with too much use? to much light? bla bla bla, does digital sensor (cmos) get old? degrade with time?
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Old 21st of March 2009 (Sat)   #2
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Default Re: Does cmos sensor get old?

Would you prefer the CCD sensor? Nikon gave up CCD to go with cmos. CMOS is the only way to go with photography. CCD works well only with camcorders.
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Old 21st of March 2009 (Sat)   #3
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Default Re: Does cmos sensor get old?

No, silicon chips do not wear out.
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Old 21st of March 2009 (Sat)   #4
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Default Re: Does cmos sensor get old?

Look at this link: http://www.pcworld.com/article/11146...ng_lenses.html

There is a quote in there from Kodak that basically says yes, but only after tens of thousands of hours.
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Old 21st of March 2009 (Sat)   #5
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Default Re: Does cmos sensor get old?

Quote:
Originally Posted by JeffreyG View Post
No, silicon chips do not wear out.
Hi,this is not correct..i am an electronic engineer and can state with confidence that silicon chips do wear out!....In particular memory chips such as eproms do go faulty with age...not 100% sure of the failure mechanism but chemical migration or tunneling within the silicon die causes nodes to get stuck at either 1 or 0.........i have never read of this happening with image sensors but it could in theory as they are produced from a silicon based die.

You would need to ask a semiconductor engineer for full details which is not me!

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Old 21st of March 2009 (Sat)   #6
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Default Re: Does cmos sensor get old?

Quote:
Originally Posted by pastanley View Post
Would you prefer the CCD sensor? Nikon gave up CCD to go with cmos. CMOS is the only way to go with photography. CCD works well only with camcorders.
I'm not preferring anything, I just asked a question...
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Old 21st of March 2009 (Sat)   #7
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Default Re: Does cmos sensor get old?

Quote:
Originally Posted by MGW172 View Post
Look at this link: http://www.pcworld.com/article/11146...ng_lenses.html

There is a quote in there from Kodak that basically says yes, but only after tens of thousands of hours.
but thats about CCD? cmos?

my 30D sensor seems to be a bit... ehem, it's 3 years old also...
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Old 21st of March 2009 (Sat)   #8
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Default Re: Does cmos sensor get old?

But hot pixels increase with useage/age?
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Old 22nd of March 2009 (Sun)   #9
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Default Re: Does cmos sensor get old?

basically this questions are less researched and canon along with Nikon are quiet on their sensor lives...
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Old 22nd of March 2009 (Sun)   #10
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Default Re: Does cmos sensor get old?

It will, but I think the tech will get obsolete before there's a noticeable degradation
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Old 22nd of March 2009 (Sun)   #11
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Default Re: Does cmos sensor get old?

Everything gets old and degrades with time. Eventually, every camera will be nothing more than trash. Does that help?
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Old 22nd of March 2009 (Sun)   #12
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Default Re: Does cmos sensor get old?

sandro9mm,
Well my very old 10D still works with no noticeable degradation in quality, I believe your shutter will go before the sensor does, cause after all most things don't last forever

However if you are looking for an excuse to buy a new DSLR, well you better get one before you find out!!
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Old 22nd of March 2009 (Sun)   #13
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Default Re: Does cmos sensor get old?

It will fail electronicly before the sensor it self goes. Unless direct damage is inflicted, the sensor will not degrade in your life time. Same goes with any silicon device. The half life of silicon is stable and will not degrade. Even the synthetic version of the radio isotope is only half life at 170 years. so you are good to go!
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Old 22nd of March 2009 (Sun)   #14
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Default Re: Does cmos sensor get old?

CMOS devices do have shelf life's.
But these devices tend to be tested so well that the user does not see failure before other parts in the camera go bad first.

Generaly - high end devices go for 2000 hr and 5000hr accelerated life test before they can be sold.
It is the cheaper products - think cell phone parts - that do not have the same life expectancy.

As long as the CMOS chips stays in the operating temp and does not get a voltage spike or physical damage - you should have no worries.
There are chips that will have 'hot pixels' show up in there life time. Then it becomes a software issue (option) to remove them while using the device or you throw the device away.

You will probably never see Sony (Nikon) or Canon talk about Life/Yield parameters. it is industry practice.

Later,
_Mark
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